| 闭式数控回转头压力机机身模态分析 |
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| 引用本文： | 季忠,管延锦,刘韧.闭式数控回转头压力机机身模态分析[J].重型机械,2001,1(1):37-39. |
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| 作者姓名： | 季忠 管延锦 刘韧 |
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| 作者单位： | 1. 山东工业大学
2. 济南铸锻机械研究所 |
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| 摘 要： | 通过MARC软件采用Lanczos模态分析方法对闭式数控回转头压力机机身进行了模态分析，求出了前十阶振型，其结果存在大量局部振型。通过局部加强，新结构的前四阶振型分别转化为整体振型，系统的固有频率提高了30%左右，明显改善了设备的动态性能。
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| 关 键 词： | 压力机 机身 模态分析 动态有限元 |
Modal analysis of straight
side CNC turret press frame |
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| Abstract: | Using Lanczos method and by FEM software MARC, a mod al analysisof straight side CNC turret press frame has been conducted and a cal culaticn of the first ten modes has been made. The results show that the original structure is unsteady in operation. Measures are taken and the frame is modified by local reinforcement. The new structure improves the modes and the natural frequencies are increased by 30%, together with a significant improvement of it s dynamic characteristics. |
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